How to creat nonlinear bin histogram/bar plot with same Bar width?
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I am try to plot a histogram with uneven space bars in definition ( Logarithmic etc.), but I want all bar looks same width instead. Thanks for sharing the method to do it.
采纳的回答
Star Strider
2014-5-2
Here is one way to use regular-width bins spaced logarithmically:
x = 10+2*randn(1, 100); % Create data
bins = linspace(floor(min(x)), ceil(max(x)), 25); % Define bins
xc = histc(x,bins); % Do histogram counts
figure(1)
bar(log(bins), xc) % Plot bars against log of ‘bins’
logxts = get(gca, 'XTick') % 'XTick' values currently logarithmic
expxts = exp(logxts); % Take antilog to use them as new ‘XTickLabels’
set(gca, 'XTickLabel', floor(100*expxts)/100)
The plot:
This produces logarithmic X-axis values (scaling and labels) for the bar plot. If you want to experiment with other transformations, be sure you can uniquely inverse-transform them to get the X-axis labels.
更多回答（1 个）
mirza
2016-12-26
You basically need to do 2 things:
1- Make the bin edges follow a logarithmic scale.
2- Set the x-axis to logarithmic scale.
y=100*rand(1000,1); % create random data
x=logspace(-1,2,20); % create bin edges with logarithmic scale
histogram(y,x); % create the plot
set(gca,'xscale','log'); % scale the x-axis
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